Hi, I bought an ACD 30" a few months ago and I've used it on and off for max 2-5 minutes to test old macs, but now I wanted to implement it into my main setup and realised that it has one big issue. When using it ( DVI / original miniDP adapted ) after it properly heats up the display just turns on and off randomly for a few times, when I turn it back on or of it just switches back and forth very erratically, it doesn't have a pattern or anything, but it just won't stay on. What could be the cause?